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PH-EP-2015-086

(Submitted on 07 May 2015)

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Abstract

A search for $B_s^0 \to \overline{D}^{0} f_{0}(980)$ decays is performed
using $3.0\, {\rm fb}^{-1}$ of $pp$ collision data recorded by the LHCb
experiment during 2011 and 2012. The $f_{0}(980)$ meson is reconstructed
through its decay to the $\pi^{+}\pi^{-}$ final state in the mass window $900\,
{\rm MeV}/c^{2} < m(\pi^{+}\pi^{-}) < 1080\, {\rm MeV}/c^{2}$. No significant
signal is observed. The first upper limits on the branching fraction of
$\mathcal{B}(B_s^0 \to \overline{D}^{0} f_{0}(980)) < 3.1\,(3.4) \times
10^{-6}$ are set at $90\,\%$ ($95\,\%$) confidence level.

Figures and captions

Invariant mass distribution of candidates in the $\overline{ D }{} {}^0 \pi ^+ \pi ^- $ data sample with fit results overlaid, shown on a logarithmic scale.
The components are as detailed in the legend. The labels (a) to (e) show the NN bins with increasing purity.
The NN binning scheme is described in Sec. 4.

Invariant mass distribution of candidates in the $\overline{ D }{} {}^0 f_0(980)$ data sample with fit results overlaid, shown on a logarithmic scale.
The components are as detailed in the legend. The labels (a) to (e) show the NN bins with increasing purity.
The NN binning scheme is described in Sec. 4.